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H-Hour. The specific time at which an operation or exercise commences, or is due to commence (this term is used also as a reference for the designation of days/hours before or after the event). (NATO); also known as 'Zero Hour'. I-Day. Used informally within the U.S. military bureaucracy to variously designate the "Implementation Day" or the ...
Military time zone. The military time zones are a standardized, uniform set of time zones for expressing time across different regions of the world, named after the NATO phonetic alphabet. The Zulu time zone (Z) is equivalent to Coordinated Universal Time (UTC) and is often referred to as the military time zone.
The modern 24-hour clock is the convention of timekeeping in which the day runs from midnight to midnight and is divided into 24 hours. This is indicated by the hours (and minutes) passed since midnight, from 00 (:00) to 23 (:59), with 24 (:00) as an option to indicate the end of the day. This system, as opposed to the 12-hour clock, is the ...
It is best known for its use by the military and is therefore commonly called "military time". In U.S. military use, 24-hour time is traditionally written without a colon (1800 instead of 18:00). For exact hour times, they are referred to as "hundred", so 10:00 would be referred to as "ten hundred hours" and 11:00 as "eleven hundred hours ...
The slogan "one weekend a month, two weeks a year" has been most commonly seen by Americans in recruiting ads for the National Guard, especially in the 1970s, 1980s and 1990s. Although the slogan is only sometimes used directly in advertising, as of 2004 it was used to describe the duties of at least some military posts.
The Pritzker Military Museum & Library (formerly Pritzker Military Library) is a non-profit museum and a research library for the study of military history on Michigan Avenue in Chicago, Illinois. The institution was founded in 2003, and its specialist collections include material relating to Winston Churchill and war-related sheet music .
The single standard watch of 4 hours (two double hours) was divided into 60 time-degrees (ush). One double hour had 30, and one complete stellar day, 360 (12 times 30). [ 19 ] This assignment was the creation of the 360-degree circle, as the degree went from being a time division to an angular distance of rotation.
Fortnight. A fortnight is a unit of time equal to 14 days (two weeks ). The word derives from the Old English term fēowertīene niht, meaning " fourteen nights " (or "fourteen days", since the Anglo-Saxons counted by nights). [1] [2]